Scientists Integrate Colour-tunable, InGaN Nanowire LED Arrays Onto Silicon
Laterally-arranged multi-colour subpixels enable controlled light mixing at the chip-level
Researchers at McGill University, the New Jersey Institute of Technology, and Samsung Advanced Institute of Technology have demonstrated controllable and tunable full colour light generation through the monolithic integration of blue, green/yellow, and orange/red InGaN nanowire LEDs.
The multi-colour nanowire LED arrays were fabricated directly on a silicon substrate using a three-step selective area MBE growth process. According to the team, the lateral-arranged, multi-colour subpixels enable controlled light mixing at the chip-level and yield colour-tunable light emission with correlated colour temperature (CCT) values in the range from 1900 K to 6800 K, while maintaining excellent colour rendering capability.
For each nanowire LED, they showed that the emission spectrum can be tailored by varying the sizes and/or compositions of the dots.
The researchers say that such miniaturised RGB nanowire LED arrays would be well suited for future smart lighting, display, and imaging applications.
"˜Color-tunable, phosphor-free InGaN nanowire light-emitting diode arrays monolithically integrated on silicon' by Renjie Wang et al, appeared in
Optics Express, Vol. 22, Issue S7, http://dx.doi.org/10.1364/OE.22.0A1768
AngelTech Live III: Join us on 12 April 2021!
AngelTech Live III will be broadcast on 12 April 2021, 10am BST, rebroadcast on 14 April (10am CTT) and 16 April (10am PST)
and will feature online
versions of the market-leading physical events: CS International
and PIC International
PLUS a brand new Silicon Semiconductor International
Thanks to the great diversity of the semiconductor industry, we are always chasing new markets and developing a range of exciting technologies.
2021 is no different. Over the last few months interest in deep-UV LEDs has rocketed, due to its capability to disinfect and sanitise areas and combat Covid-19. We shall consider a roadmap for this device, along with technologies for boosting its output.
We shall also look at microLEDs, a display with many wonderful attributes, identifying processes for handling the mass transfer of tiny emitters that hold the key to commercialisation of this technology.
We shall also discuss electrification of transportation, underpinned by wide bandgap power electronics and supported by blue lasers that are ideal for processing copper.
Additional areas we will cover include the development of GaN ICs, to improve the reach of power electronics; the great strides that have been made with gallium oxide; and a look at new materials, such as cubic GaN and AlScN.
Having attracted 1500 delegates over the last 2 online summits, the 3rd event promises to be even bigger and better – with 3 interactive sessions over 1 day and will once again prove to be a key event across the semiconductor and photonic integrated circuits calendar.
So make sure you sign up today and discover the latest cutting edge developments across the compound semiconductor and integrated photonics value chain.
REGISTER FOR FREE